package com.qk.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.qk.common.PageResult;
import com.qk.dto.UserDto;
import com.qk.entity.User;
import com.qk.exception.BusinessException;
import com.qk.mapper.UserMapper;
import com.qk.service.UserService;
import com.qk.utils.JwtUtils;
import com.qk.vo.LoginResultVo;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Slf4j
@Service
public class UserServiceImp implements UserService {
    @Autowired
    private UserMapper userMapper;
    @Override
    public PageResult<User> list(UserDto userDto) {
        //1.设置分页参数
        PageHelper.startPage(userDto.getPage(), userDto.getPageSize());


        //2.调用mapper接口查询
        List<User> userList= userMapper.selectList(userDto);

        //3.解析并封装结果
        Page<User> page=(Page<User>) userList;
        return new PageResult<>(page.getTotal(), page.getResult());
    }

    @Override
    public void add(User user) {
        //加密密码
        String password = user.getPassword()+"123";
        user.setPassword(DigestUtils.md5DigestAsHex(password.getBytes()));

        user.setCreateTime(LocalDateTime.now());
        user.setUpdateTime(LocalDateTime.now());
        userMapper.insert(user);
    }

    @Override
    public void delete(List<Integer> ids) {
        userMapper.delete(ids);
    }

    @Override
    public void update(User user) {
        user.setUpdateTime(LocalDateTime.now());
        user.setPassword(DigestUtils.md5DigestAsHex((user.getUsername()+"123").getBytes()));
        userMapper.update(user);
    }

    @Override
    public User getById(Integer id) {
        return userMapper.getById(id);

    }

    @Override
    public List<User> getByRole(String roleLabel) {
        return userMapper.getByRole(roleLabel);
    }

    @Override
    public LoginResultVo login(User user) {
        //1.调用mapper接口查询用户
        User u = userMapper.getByUsername(user.getUsername());
        //2.判断用户是否存在
        if(u==null){
            log.info("用户不存在:{}",user);
            throw new BusinessException("用户名或密码错误");
        }
        //3.判断密码是否正确
        String _pass = DigestUtils.md5DigestAsHex(user.getPassword().getBytes());
        if(!_pass.equals(u.getPassword())){
            log.info("密码错误:{}",user);
            throw new BusinessException("用户名或密码错误");
        }
        //4.判断状态是否正确
        if(u.getStatus()!=1){
            log.info("用户状态错误:{}",user);
            throw new BusinessException("用户已停用");
        }
        //5.封装结果并返回
        LoginResultVo loginResultVo=new LoginResultVo();
        loginResultVo.setId(u.getId());
        loginResultVo.setUsername(u.getUsername());
        loginResultVo.setName(u.getName());
        loginResultVo.setImage(u.getImage());
        loginResultVo.setRoleLabel(u.getRoleLabel());

        //调用mapper接口,生成jwt令牌
        Map<String,Object> claims=new HashMap<>();
        claims.put("id",u.getId());
        claims.put("username",u.getUsername());
        String jwt= JwtUtils.generateToken(claims);
        loginResultVo.setToken(jwt);

        return loginResultVo;

    }
}
